What are the Cloudflare Registry entries to get my iCloud Alias email to route to my iCloud Mail Account?

A few months ago I set up an iCloud email alias with Cloudflare through my Apple account and purchased my own email domain name. I realize that this alias is still connected to my primary iCloud account.

After spending a couple of months wrestling with Office 365 for iCloud on my iPad Pro, I decided to buy a Windows laptop and purchase M365 Business Standard. During the course of installation, M365 asked to make registry changes to Cloudflare to route my iCloud alias email to Outlook and I agreed. Since those changes were made, I can no longer get my Alias emails to my iPhone / iPad etc. For clarity, the situation is:

1. I am getting my Primary @icloud.com emails to M365 outlook.
2. I am getting my iCloud Alias @textralian.com emails to M365 outlook (via textralian.onmicrosoft.com).
3. I am getting my Primary @icloud.com emails to my iPhone and iPad.
4. I CANNOT get my iCloud Alias emails to my iPhone and iPad.

Can someone tell me what registry entries need to be made at Cloudflare or in my iCloud account to get my Alias emails back to my Apple devices?

I contacted Microsoft, they said talk to Apple! TIA.